0xC1900101 - 0x30018 Update Error: How to Fix it

The error code 0xC1900101 – 0x30018 is associated with the Windows operating system update process. It typically occurs during the installation or upgrade of Windows 10.

Some of our readers have recently reported that they encounter this error while trying to update their Windows 10 PC. In this article, we will discuss what causes it and how to fix it quickly.

What causes 0xC1900101 – 0x30018 update error?

This error can be caused by a wide range of issues. Below are some of the common reasons as reported in the Microsoft forum by some users who have been able to troubleshoot the issue successfully:

• Incompatible device drivers or hardware – Outdated or incompatible device drivers can lead to this error, particularly for hardware components like the graphics card or network adapter.
• Software conflicts – Some software installed on your computer might interfere with the update process and cause compatibility issues.
• Insufficient disk space – If your system doesn’t have enough free space on the hard drive, the update process may fail.
• Windows update service issues – Problems with the Windows Update service itself, such as corrupted files or settings, can also trigger this error.

Now that you know some of the potential reasons behind the 0xC1900101 – 0x30018 error, let’s proceed to how to fix the issue.

How can I fix 0xC1900101 – 0x30018 update error?

Before trying any of the advanced solutions provided in this guide, it may be helpful to attempt the following preliminary checks:

• Disconnect any external USB or SD card and any unnecessary component connected to your computer peripherals.
• Ensure that you have enough free space on your hard drive. You can also run a disk cleanup to free up space.
• Perform a clean boot, you should be able to identify any software conflicts that could be causing the error.
• Install all the latest Windows Updates and latest drivers and updates from your hardware and software manufacturers.
• Temporarily disable your antivirus software and other security programs.
• Try switching to a wired connection using a network cable if you’re using a Wi-Fi connection, and disable or uninstall your wireless network card.

Having confirmed the above checks, if you require further assistance, you can work your way through any of the methods provided below.

1. Run the Windows app troubleshooter

1. Press the Windows + I keys to open the Settings app.
2. Select System, click on Troubleshoot, and select Other troubleshooters.
3. Next, click on Windows Update and select the Run button.
4. Wait for the troubleshooter to identify the problem that is preventing you from installing the update and restart your PC.

Once the Windows app troubleshooting process is completed, try to install the update again to see if the 0xC1900101 – 0x30018 error has been fixed. Proceed to the next fix if it persists.

2. Run the SFC/DISM scans

1. Press the Start button, type cmd, and select run as an administrator.
2. In the CMD window, type the following command in the text field and press Enter: sfc /scannow
3. Type the following, and press Enter after each command: DISM /Online /Cleanup-Image /RestoreHealth 
4. The scanning process may take up to 15 minutes, so wait till the verification reaches 100%.

Running the SFC and DISM commands helps to rule out the possibility of system file corruption. In the case where CMD is not working in Windows, here is an easy fix to apply.

Anyhow, you could benefit from totally reliable support regarding Windows issues given by a tailored system PC repair tool. The process is 100% automatic and you only have to press one button to repair corrupted files.

3. Reset Windows Update components

1. Press the Start button, type cmd, and select run as an administrator.
2. Type the following commands one after the other and press Enter to quit the services: net stop wuauserv  net stop cryptSvc   net stop bits   net stop msiserver
3. Next, run the following commands to rename the Software Distribution and Catroot2 folders: ren C:\Windows\SoftwareDistribution SoftwareDistribution.old   ren C:\Windows\System32\catroot2 catroot2.old
4. Finally, restart the services: net start wuauserv  net start cryptSvc   net start bits   net start msiserver

After resetting the Windows components, the Windows Update feature should have been fixed by now. If not, proceed to the next step.

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4.  Use the Media Creation tool

1. Visit this Microsoft site to download the ISO installer.
2. Click on the Download button.
3. Once the download is complete, double-click on the file to run it.
4. Follow the on-screen instructions to complete the installation process.

If the update error persists, you can try using the Windows Media Creation Tool to create a bootable USB or DVD and perform a clean installation of Windows. This will fix the error by installing the latest version of Windows.

And that’s it on how to fix the 0xC1900101 – 0x30018 error. Hopefully, one of the methods provided in this article will help you fix the issue.

Other users have reported similar issues such as Windows 11 0xC1900101, 0xc1900101–0x20017 installation error in Safe_OS, and so forth.

If you have any questions or suggestions regarding this issue, please contact us by using the comments section below.